Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025
Financing Receivable, Past Due [Line Items]
FinancingReceivableNonaccrualWithAllowance	$ 2,439	$ 2,339
Nonperforming
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual, No Allowance	22,019	22,256
Financing Receivable, Nonaccrual	24,458	24,595
One-to-four family \| Nonperforming
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual, No Allowance	2,507	1,519
FinancingReceivableNonaccrualWithAllowance	0	0
Financing Receivable, Nonaccrual	2,507	1,519
Multifamily \| Nonperforming
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual, No Allowance	2,871	3,937
FinancingReceivableNonaccrualWithAllowance	0	0
Financing Receivable, Nonaccrual	2,871	3,937
Commercial real estate \| Nonperforming
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual, No Allowance	4,763	4,545
FinancingReceivableNonaccrualWithAllowance	2,200	2,202
Financing Receivable, Nonaccrual	6,963	6,747
Business \| Nonperforming
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual, No Allowance	11,878	12,255
FinancingReceivableNonaccrualWithAllowance	136	104
Financing Receivable, Nonaccrual	12,014	12,359
Consumer \| Nonperforming
Financing Receivable, Past Due [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0	0
FinancingReceivableNonaccrualWithAllowance	103	33
Financing Receivable, Nonaccrual	$ 103	$ 33

Financing Receivable, Excluding Accrued Interest, Nonaccrual WithAllowance

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

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Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

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- Definition

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